\Header{grid.grill}{Draw a Grill}
\keyword{dplot}{grid.grill}
\begin{Description}\relax
This function draws a grill within a Grid viewport.\end{Description}
\begin{Usage}
\begin{verbatim}
grid.grill(h = unit(seq(0.25, 0.75, 0.25), "npc"),
           v = unit(seq(0.25, 0.75, 0.25), "npc"),
           default.units = "npc", gp=gpar(col = "grey"), vp = NULL)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{h}] A numeric vector or unit object
indicating the horizontal location of the
vertical grill lines.
\item[\code{v}] A numeric vector or unit object
indicating the vertical location of the
horizontal grill lines.
\item[\code{default.units}] A string indicating the default units to use
if \code{h} or \code{v} are only given as numeric vectors.
\item[\code{gp}] An object of class \code{gpar}, typically the output
from a call to the function \code{gpar}.  This is basically
a list of graphical parameter settings.
\item[\code{vp}] A Grid viewport object.
\end{ldescription}
\end{Arguments}
\begin{Value}
None.\end{Value}
\begin{Author}\relax
Paul Murrell\end{Author}
\begin{SeeAlso}\relax
\link{Grid},
\code{\Link{viewport}}.\end{SeeAlso}

